CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY (USD $) In Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]
Balance at Dec. 31, 2011	$ 346,961	$ 1,806	$ 69,328	$ 318,130	$ (10,494)	$ (31,809)
Net income	16,148	0	0	16,148	0	0
Change in other comprehensive income	1,156	0	0	0	1,156	0
Omnibus Equity Incentive Plan	244	1	243	0	0	0
Cash Dividends	(6,222)	0	0	(6,222)	0	0
Balance at Jun. 30, 2012	358,287	1,807	69,571	328,056	(9,338)	(31,809)
Balance at Mar. 31, 2012	354,937	1,807	69,448	325,573	(10,082)	(31,809)
Net income	8,705	0	0	8,705	0	0
Change in other comprehensive income	744	0	0	0	744	0
Omnibus Equity Incentive Plan	123	0	123	0	0	0
Cash Dividends	(6,222)	0	0	(6,222)	0	0
Balance at Jun. 30, 2012	358,287	1,807	69,571	328,056	(9,338)	(31,809)
Balance at Dec. 31, 2012	372,122	1,808	69,989	338,342	(7,472)	(30,545)
Net income	14,139	0	0	14,139	0	0
Change in other comprehensive income	(11,674)	0	0	0	(11,674)	0
Omnibus Equity Incentive Plan	366	1	365	0	0	0
Cash Dividends	(6,389)	0	0	(6,389)	0	0
Treasury stock purchase (5,354 shares)	(162)					(162)
Balance at Jun. 30, 2013	368,402	1,809	70,354	346,092	(19,146)	(30,707)
Balance at Mar. 31, 2013	378,383	1,809	70,171	346,035	(8,925)	(30,707)
Net income	6,446	0	0	6,446	0	0
Change in other comprehensive income	(10,221)	0	0	0	(10,221)	0
Omnibus Equity Incentive Plan	183	0	183	0	0	0
Cash Dividends	(6,389)	0	0	(6,389)	0	0
Balance at Jun. 30, 2013	$ 368,402	$ 1,809	$ 70,354	$ 346,092	$ (19,146)	$ (30,707)